Electrical audio signal processing systems and devices – Vehicle
Reexamination Certificate
2008-11-20
2011-12-20
Nguyen, Dao H (Department: 2818)
Electrical audio signal processing systems and devices
Vehicle
C381S058000, C381S066000, C381S312000, C381S357000, C381S359000, C381S392000, C455S345000, C455S347000, C455S566000, C704S216000, C704S226000, C704S231000, C704SE21004
Reexamination Certificate
active
08081772
ABSTRACT:
A triangular microphone assembly (101) for use in a vehicle accessory includes a mirror housing (106) adapted for attachment to the interior of the vehicle. A mirror is disposed in an opening of the mirror housing (106) and a plurality of virtual digital microphones (108a,108b,108c) are arranged in a substantially triangular configuration in the mirror housing (106). A digital signal processor (DSP) (537) is used for receiving signals from the plurality of digital microphones (108a,108b,108c) such that the digital microphones exhibit directional characteristics for reducing undesirable noise in at least one direction by normalizing the phase of the received signals as a function of signal frequency.
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Bryson Michael A.
Turnbull Robert R.
Watson Alan R.
Gentex Corporation
Nguyen Dao H
Price Heneveld LLP
Ryan Scott P.
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